usb/80371: cannot install 5.4-RC3 from DOS partition

[Nehal Mistry]

>Number:         80371
>Category:       usb
>Synopsis:       cannot install 5.4-RC3 from DOS partition
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Apr 26 19:30:10 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     Nehal Mistry
>Release:        5.4-RC3
>Organization:
>Environment:
>Description:
i'm trying to install FreeBSD 5.4-RC3 from a dos partition, it seems to detect it corrrectly but i get this error:

Unable to transfer the base distribution from ad1s2
Do you want to try to retrieve it again?

i extracted the disc1 iso to \FREEBSD directory on ad1s2. it worked perfectly fine in 5.3, and iirc, 5.4-RC1. this problem started from 5.4-RC2
>How-To-Repeat:
try to install from DOS partition
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted: